How to get the best from your battery

[vfr400]

How long is too long & can you list some of the safety concerns please?

It's not an absolute condition. It's a case of the longer the worse, but the badness is very small. If you leave it on for 24 hrs, it might do .01% damage. Over the years of too-long charging every time, it might reduce the life of your battery by 10%. It really is nothing to worry about, but just something to be aware of. The biggest danger is from your battery catching fire when something goes wrong with the charge control system, but the chance of that happening is also extremely small.

 

[nigelbb]

No.
Ebike chargers charge or cease charging when the Battery BMS says so, If the BMS detects a fault or issue then it will prevent any power to flow.

Are you saying it's the battery that has the smarts to prevent damage by overcharging not the charger?

 

[anotherkiwi]

Are you saying it's the battery that has the smarts to prevent damage by overcharging not the charger?

Both.

The charger detects that the SOC of the battery has reached 42v and turns the LED to green and stops sending current. If the battery drains to 41.xxv it will resume charging.

The BMS starts balancing the cell groups when the SOC reaches 41.5v and when the first parallel group reaches 4.2v it will stop receiving current.

 

[Deleted member 25121]

Are you saying it's the battery that has the smarts to prevent damage by overcharging not the charger?

The BMS electronics (Battery Management System) inside the battery pack take care of charging the individual cells. When the BMS determines that no further charging is required the current drawn from the charger becomes very low, the charger detects this and goes into standby mode.

 

[nigelbb]

The BMS electronics (Battery Management System) inside the battery pack take care of charging the individual cells. When the BMS determines that no further charging is required the current drawn from the charger becomes very low, the charger detects this and goes into standby mode.

Thank you. Glad to have it confirmed that you don't need worry about taking the battery off charge once charging is complete as the charger & battery between them prevent any adverse outcome just as leaving my laptop connected to the charger makes no difference to battery life.

 

[Deleted member 25121]

Thank you. Glad to have it confirmed that you don't need worry about taking the battery off charge once charging is complete as the charger & battery between them prevent any adverse outcome just as leaving my laptop connected to the charger makes no difference to battery life.

Well actually leaving your laptop connected to the charger, even when it's only when you're using it, is not wholly advised. It would be best to run it off the batteries now and then, maybe once a month.

The bottom line is that battery technology has advanced a lot in the last decade and there's no need to be too concerned about battery life any more, it's much more important to enjoy using your ebike and laptop.